msem-instigator

Target creature gets -1/-1 until end of turn. If that creature is tapped, it gets -3/-3 until end of turn instead.

Whenever a creature attacks you, tap that creature. It doesn't untap during its controller's next untap step.

Wu Xing (Add effects based on the number of colors of mana spent to cast this spell.)
1 | Return up to two target creature cards from your graveyard to your hand.
3 | You may put a creature card with mana value 3 or less from your hand onto the battlefield.

Destroy up to one target artifact or enchantment. Rouse 2. (Distribute two +1/+1 counters among permanents you control. If they aren't creatures, tap them and they become 0/0 creatures in addition to their other types.)

Glitch {2} (Remove one [restriction] for each time you pay the glitch cost.)
Tap up to two target creatures [with the same name]. Those creatures don't untap during their controller's next untap step.

Creatures you don't control get -3/-0 until end of turn. Those creatures don't untap during their controller's next untap step.

Enchant creature
Enchanted creature has frenzy 3. (Whenever that creature attacks and isn't blocked, it gets +3/+0 until end of turn.)

As an additional cost to cast this spell, you may sacrifice a creature.
Create a 1/1 green Insect creature token. If you sacrificed a creature to cast this spell, create three of those tokens instead.

Whenever a -1/-1 counter is put on a creature, you may create a 1/2 green Frog creature token.

At the beginning of each end step, Fretport's Fade deals 2 damage to each player that had one or more cards put into their graveyard this turn.

Exile X target creature cards from graveyards. You gain life equal to the total mana value of those cards.

Whenever a creature you control deals combat damage to a player, put a tally counter on this enchantment. If it was a Dwarf or Elf, put two on it instead.
Remove two tally counters from this enchantment: Draw a card.

At the beginning of your end step, if you own a card in exile, create a 1/1 white Spirit creature token with flying.

Tap up to two target creatures. Put a stun counter on one of them. (If a permanent with a stun counter would become untapped, remove one from it instead.)
Flashback {3}{U} (You may cast this card from your graveyard for its flashback cost. Then exile it.)

Frigid Highlands enters tapped unless you control an Island.
{T}: Add {R} or {G}.

{T}: Add {C}.
{T}, Pay 1 life: Add {G} or {W}.

Target instant or sorcery card in your graveyard gains flashback until end of turn. The flashback cost is equal to its mana cost. (You may cast that card from your graveyard for its flashback cost. Then exile it. Mana cost includes color.)

Whenever one or more cards leave your graveyard for the first time each turn, each player loses 1 life and you draw a card.

Tap up to one target nonland permanent and put a stun counter on it.
Compose (Then if you cast this from your hand, exile it and create a Saga token with “r3—You may cast a copy of this card from exile without paying its mana cost.”)

Reveal the top six cards of your library. Put all noncreature cards revealed this way into your graveyard, put the rest back on top in any order, then draw cards equal to the number of cards put on top.

Once each turn, if you would draw a card, you may skip that draw. If you do, create a tapped 3/2 colorless Horror creature token.

When From Peace and Purpose enters, exile all creatures until From Peace and Purpose leaves the battlefield.
At the beginning of your upkeep, investigate. (Create a colorless Clue artifact token with “{2}, Sacrifice this artifact: Draw a card.”)

At the beginning of your end step, if a card left your graveyard this turn, create a 3/1 black Human Rogue creature token named Shengin Renegade.

You may reveal a Revelation card you own from outside the game or choose a face-up Revelation card you own in exile. Put that card into your hand. Exile From Stars Above.

Whenever a creature you control enters for the first time each turn, you may sacrifice it. If you do, exile cards from the top of your library until you exile a creature card. Put that card onto the battlefield.